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Risk Of Pore Water Ammonia Toxicity In Dredged Material Bioassays Dredging Operations Technical Support Program
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Book Synopsis Risk of Pore Water Ammonia Toxicity in Dredged Material Bioassays. Dredging Operations Technical Support Program by :
Download or read book Risk of Pore Water Ammonia Toxicity in Dredged Material Bioassays. Dredging Operations Technical Support Program written by and published by . This book was released on 1995 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ammonia is a highly toxic, naturally occurring constituent of sediment pore water. It is not treated as a contaminant of concern for the regulatory evaluation of dredged material since it undergoes rapid oxidation and dilution during dredging and disposal. Because dredged material is evaluated using effects-based tests (i.e., whole sediment and elutriate toxicity tests), there is the potential for ammonia to exert toxicity and confound the regulatory decision-making process. This report evaluates the potential for ammonia toxicity in dredged material bioassays.
Book Synopsis Risk of Pore Water Ammonia Toxicity in Dredged Material Bioassays by : Jerre G. Sims
Download or read book Risk of Pore Water Ammonia Toxicity in Dredged Material Bioassays written by Jerre G. Sims and published by . This book was released on 1995 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Risk of Pore Water Ammonia Toxicity in Dredged Material Bioassays by : Jerre G. Sims
Download or read book Risk of Pore Water Ammonia Toxicity in Dredged Material Bioassays written by Jerre G. Sims and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Environmental Effects of Dredging: Naturally Occurring Levels of Ammonia and Sulfide in Pore Water: An Assessment of the Literature by :
Download or read book Environmental Effects of Dredging: Naturally Occurring Levels of Ammonia and Sulfide in Pore Water: An Assessment of the Literature written by and published by . This book was released on 1995 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ammonia and sulfide are natural constituents of sediment. Both are very toxic to aquatic organisms. Consequently, their presence may bias dredged material toxicity bioassays that are designed to evaluate the toxicity of persistent contaminants such as heavy metals and petroleum and chlorinated hydrocarbons. The purpose of this technical note is to summarize published information on sediment pore water ammonia and sulfide concentrations that occur in situ. In a subsequent technical note, this exposure information will be coupled with ammonia and sulfide toxicity data to estimate the potential influence of these constituents on dredged material toxicity bioassays.
Book Synopsis Dredging Operations Technical Support Program: Considerations for Reducing the Cost of Testing Dredged Material by : Judith C. Pennington
Download or read book Dredging Operations Technical Support Program: Considerations for Reducing the Cost of Testing Dredged Material written by Judith C. Pennington and published by . This book was released on 1990 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: The high cost of chemical analyses and bioassays of dredged material makes it necessary for decision makers to limit testing to that which will sufficiently characterize the sediment to evaluate a selected disposal alternative. This report offers guidance for limiting the amount of testing necessary and considers other factors that could potentially reduce the cost of testing dredged material. The importance of an initial site evaluation to reduce the extent of dredged material testing is stressed. Unless a reason to believe that contamination exists can be established through examination of historical data and other site characteristics, no testing is warranted. The need for testing can sometimes be eliminated by examination of regulatory criteria for categorical exclusions, i.e., circumstances under which no testing is required. Additional cost savings can sometimes be generated during the scoping process by amelioration of the concerns of interested parties prior to preparation of an environmental impact statement. Tiered testing as presented in the Federal Standard is recommended as a cost-reduction approach to material evaluation. The principal advantage of tiered testing is that it can be stopped when sufficient information has been acquired to make a decision regarding the suitability of a given disposal alternative. Keywords: Bioassays, Compositing, Army Corps of Engineers. (kr).
Book Synopsis Investigation, Interpretation and Impact by : Richard K. Peddicord
Download or read book Investigation, Interpretation and Impact written by Richard K. Peddicord and published by . This book was released on 1997 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Environmental Toxicology and Chemistry by :
Download or read book Environmental Toxicology and Chemistry written by and published by . This book was released on 1997 with total page 984 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1996 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods by :
Download or read book Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods written by and published by . This book was released on 1994 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis QA/QC guidance for sampling and analysis of sediments, water, and tissues for dredged material evaluations chemical evaluations by :
Download or read book QA/QC guidance for sampling and analysis of sediments, water, and tissues for dredged material evaluations chemical evaluations written by and published by DIANE Publishing. This book was released on 1995 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sediment Classification Methods Compendium by : United States. Environmental Protection Agency. Sediment Oversight Technical Committee
Download or read book Sediment Classification Methods Compendium written by United States. Environmental Protection Agency. Sediment Oversight Technical Committee and published by . This book was released on 1992 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document is a compendium of scientifically valid and accepted methods that can be used to assess sediment quality and predict ecological impacts...the intent here is to provide the most useful overall measures or predictors of ecological impacts currently in use rather than procedures that may have limited application outside of a particular regulatory framework... parag The information provided in the compendium on the relative strengths and weaknesses of the different assessment methods can provide assistance in selecting the appropriate methods.
Book Synopsis Evaluating Environmental Effects of Dredged Material Management Alternatives by :
Download or read book Evaluating Environmental Effects of Dredged Material Management Alternatives written by and published by . This book was released on 1992 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document is intended to serve as a consistent "roadmap" for U.S. Army Corps of Engineers and U.S. Environmental Protection Agency personnel in evaluating the environmental acceptability of dredged amterial management alternatives. Specifically, its major objectives are to provide: A general technical framwork for evaluating the environmental acceptability of dredged material management, alternatives (open-water disposal, confined (diked) disposal, and beneficial uses). Additional technical guidance to augment present implementation and testing manuals for addressing the environmental acceptability of available management options for the discharge of dredged material in both ope water and confined sites. Enhanced consistency and coordination in USAC/EPA decision making in accordance with Federal environmantl statutes regulating dredged material management.
Book Synopsis Methods for Measuring the Toxicity and Bioaccumulation of Sediment-associated Contaminants with Freshwater Invertebrates by :
Download or read book Methods for Measuring the Toxicity and Bioaccumulation of Sediment-associated Contaminants with Freshwater Invertebrates written by and published by . This book was released on 1994 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sediment contamination is a widespread environmental problem that can potentially pose a threat to a variety of aquatic ecosystems. The sediment test methods in this manual will be used by The United States Environmental Protection Agency (USEPA) to make decisions under a range of statutory authorities concerning such issues as: dredged material disposal, registration of pesticides and toxic substances, superfound site assessment, and assessment and cleanup of hazardous waste treatment, storage, and disposal facilities. The use of uniform sediment testing procedures by USEPA programs is expected to increase data accuracy and precision, facilitate test replication, increase the comparative value of test results, and ultimately, increase the efficiency of regulatory processes requiring sediment tests.
Book Synopsis Guidelines for the Sampling and Analysis of Dredged Material Intended for Disposal at Sea by : International Maritime Organization
Download or read book Guidelines for the Sampling and Analysis of Dredged Material Intended for Disposal at Sea written by International Maritime Organization and published by IMO Publishing. This book was released on 2005 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: The guidance contained in this publication addresses the selection of substances of concern and effects to be determined, field sampling, and physical, chemical and biological analysis, as well as guidelines for the sampling of sediment intended for disposal at sea and the selection and analysis of physical and chemical parameters for the assessment of dredged material quality.--Publisher's description.
Download or read book Guidance Manual written by and published by . This book was released on 1989 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sediment Dredging at Superfund Megasites by : National Research Council
Download or read book Sediment Dredging at Superfund Megasites written by National Research Council and published by National Academies Press. This book was released on 2007-10-30 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Some of the nation's estuaries, lakes and other water bodies contain contaminated sediments that can adversely affect fish and wildlife and may then find their way into people's diets. Dredging is one of the few options available for attempting to clean up contaminated sediments, but it can uncover and re-suspend buried contaminants, creating additional exposures for wildlife and people. At the request of Congress, EPA asked the National Research Council (NRC) to evaluate dredging as a cleanup technique. The book finds that, based on a review of available evidence, dredging's ability to decrease environmental and health risks is still an open question. Analysis of pre-dredging and post-dredging at about 20 sites found a wide range of outcomes in terms of surface sediment concentrations of contaminants: some sites showed increases, some no change, and some decreases in concentrations. Evaluating the potential long-term benefits of dredging will require that the U.S. Environmental Protection Agency step up monitoring activities before, during and after individual cleanups to determine whether it is working there and what combinations of techniques are most effective.
Author :Division on Engineering and Physical Sciences Publisher :National Academies Press ISBN 13 :0309054931 Total Pages :318 pages Book Rating :4.3/5 (9 download)
Book Synopsis Contaminated Sediments in Ports and Waterways by : Division on Engineering and Physical Sciences
Download or read book Contaminated Sediments in Ports and Waterways written by Division on Engineering and Physical Sciences and published by National Academies Press. This book was released on 1997-04-20 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contaminated marine sediments threaten ecosystems, marine resources, and human health. They can have major economic impacts when controversies over risks and costs of sediment management interfere with needs to dredge major ports. Contaminated Sediments in Ports and Waterways examines management and technology issues and provides guidance that will help officials make timely decisions and use technologies effectively. The book includes recommendations with a view toward improving decision making, developing cost-effective technologies, and promoting the successful completion of cleanup projects. The volume assesses the state of practice and research and development status of both short-term and longer-term remediation methods. The committee provides a conceptual overview for risk-based contaminated sediment management that can be used to develop plans that address complex technological, political, and legal issues and the interests of various stakeholders. The book emphasizes the need for proper assessment of conditions at sediment sites and adequate control of contamination sources.
